NEW YORK -- Most U.S. tweens, 10- to 12-year-olds, have at least one social media account and many go online without any supervision from their parents, according to a survey released on Tuesday.

Around 9 to 12 years old, your child will enter their “tween” years. Also called pre-teenagers, tweens are at the age where they’re leaving childhood and entering adolescence. With the onset of ...

the Internet, listen to music and watch TV. The Nielsen report, Kids on the Go: Mobile Usage by U.S. Teens and Tweens, revealed that mobile phones are a source of in-home entertainment for tweens.